Long ago, a powerful demon lord ruled over the people until an equally 
powerful hero rose up to defeat him. To counter future threats, Rosewood
 Academy, a school for heroes-in-training, was created. Today, Rosewood 
Academy enrolls only the best of the best, and Arnest Flaming is the 
best of them all. The top student in the school, a dutiful girl 
nicknamed “Empress of Flame”, she has an irritating encounter with a 
light-hearted boy in the school hallway one day who seems to equal her 
powers, though she’s never seen him before. He introduces himself only 
as Blade, and Arnest soon finds out not only is he transferring into the
 school as a new student, but she is personally requested by the King to
 help him settle in to daily life in Rosewood Academy.